You know guys, all this talk about huge power in your stearmans kinda makes me nervous. Consider this, the airframe was designed for a 120 fs max 91 2s min which is what I have in mine by the way(os 91 fx) and I could not be happier! I can loop from level flight do the most beautiful stall turns and shoot touch and goes for 30 minutes on one fill up. I would never tell a fellow modeler what he/she should use in their setups, but I truly feel if this plane is overpowered, a lot of problems could arise. I 'm talking cowl bolts backing off, same for interplane bolts, vibration cracking the nice but fragile glass parts and last but not least, airframe failure at increased speeds and g loads. Its such a nice flyer, give it a try with the recommended power, if you're after scale fight, this is it in a very nice package. I added the weight box and exactly 3.75 oz. of lead to mine to achieve perfect balance.An apc 14-6 handles the propulsion chores and I have Futaba 148's in the bottom wing driving the uppers as well. Absolutely nothing special and I haven't been happier with an arf in my 20 plus years of modeling!!!